MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202641024935 A) filed by Sujitha M, Alanthurai, Tamil Nadu, on March 3, for 'design of a portable oil quality measuring sensor for repeated oil frying applications.'

Inventor(s) include K. Ashwin; K. Kowsalya; and Sujitha M.

The application for the patent was published on March 13, under issue no. 11/2026.

According to the abstract released by the Intellectual Property India: "The present invention discloses a portable oil quality measuring device for evaluating degradation of edible oils used in repeated frying applications. The system comprises a temperature sensing unit, a dielectric sensing unit, an optical color sensing unit, a microcontroller-based processing unit, and a display interface integrated into a compact portable housing. The temperature sensing unit measures real-time oil temperature to enable thermal compensation. The dielectric sensing unit includes an interdigital capacitive probe configured to detect variations in dielectric constant corresponding to the formation of polar degradation compounds. The optical sensing unit includes an RGB color sensor configured to detect color variation caused by oxidation and contamination of the oil. An embedded microcontroller processes sensor inputs using calibration algorithms and generates an oil quality index indicative of freshness or degradation level. The processed results are displayed on an OLED display for immediate user interpretation. The device provides a rapid, non-laboratory, multi-parameter assessment method that improves reliability compared to single-parameter oil testing instruments. The invention is suitable for restaurants, food processing units, and domestic kitchens for ensuring food safety and oil quality monitoring."

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